Lock.



No.. '767,067 PATENTBD AUG. 9, 1904. H. LANDSBERG.

LOCK.

APPLIATION FILED SEPT. 4. 1903.

N0 MODEL. 2 SHEETS-SHEET 1` lmfssfs.- 4 29 /N VENTO/i v BY No. 767,067. PATENTED AUG. 9, 1904. H. LANDSBBRG.

LOCK.

APPLIGATION FILED SEPT. 4, 1903.

NO MODEL. 2 BEBBTSmSHEBT 2.

- /N VEA/TOI? Patented ,August 9, 1904.

i UNTTED STATESI PATENT OEEICE.

HERMAN LANDSBERG, OF NEW Y ORK, N. Y., ASSIGNOE OE ONE-EOUETII TO ISAAC HENRY HARRIS, OF NEW YORK, N. Y.

LUCK.

SPECIFICATION forming part of Letters Patent No. 7675067, dated .August 9, 1904.

Application filed September 4, 1903. Serial No. l7lJ859, (No model.)

Improvements in Safety-Locks, of which the following is a specitication.

My invention relates to locks, and has for its object to provide a lock havingl a supple- Io mental latch for locking the main latch in its outer position, so that it cannot be withdrawn from the front of the lock except when operated by a key, and means for unlocking the main latch and withdrawing it from the back of the lock.

It has for a further object to provide a lock of the character set forth possessing advantages in points of simplicity, inexpcnsiveness, and general utility. l

ln the drawings, Figure 1 is a front view Fig. 2 is a .rear view, the cover being removed to show the interior mechanism. Fig. 3 is a longitudinal sectional View taken on the line .fe :e of Fig. 1. Eig. l1 is an end view. Eig. 5 is a longitudinal vertical sectional view taken on the line 1/ fz/ of Eig. 1. Fig. 6 is a detail View of the oscillatory lever. Fig. 7 is an interior view of the keeper.

Corresponding parts in all the figures are de- 3 noted by the same reference characters.

Referring to the drawings, 'I shall lirst proceed to describe the parts of the lock which are of the ordinary and well-known construction. Said parts comprise a casing 1, having' a cover 2 secured thereto by a screw 3 pass ing through a hole i therein and engaging a screw-threaded recess in a post G, formed on the interior of the casing, a reciprocal catch 7, having a rectangular head 8, adapted to be 4o projected through a rectangular hole 9 in the front wall 10 of the casing for the purpose of engaging a hole 10b in a keeper 10, adapted to be secured to the door-frame, and rearwardly and laterally extending arms 13, provided with lugs 14 thereon, engaged by laterally-projecting arms 15 of a key-plate 16, mounted on apivot 17 ,A formed on the interior of the casing, said plate 16 having lugs 18 and 19 formed thereon and adapted to be engaged by a key inserted through a hole 20 50 in the back of the lock, and a coil-spring 2l for holding said catch extended in locked po sition, said spring held ena post Q2, formed on the interior of the casing, and having' one of its ends in engagement with a projection 23 on the side of the lock-casing and its other in engagement with a shaft 2a on the knob 25, said shaft projecting thro n gh an elongated slot 27 in the front wall 28 of the casing and through a hole 29 in the catch 'i'.

Having described the ordinary and wellknown parts of the lock, l will now proceed to describe my improvements, which comprise a supplemental catehAO, located in the upper part of a recess il in the forward end 65 of the main catch 7, the rear end being secured to the main catch, so that its face d2 will be `flush with the face a3 of the main catch when in its forward position, and a nose 44 on its outer end adapted to project be- 70 yond the face 13 of the main catch when in its forward position and engaging the recess 10" in the keeper," an oscillatory lever 45, pivoted on a post 46, formed on the interior of the casing and provided en its front with a laterally-projecting nose L LT, which when the main catch is being moved to its forward position is projected by a spring i8 between the supplemental and main catches and a laterally-projecting curved nose i9 on its rear SO end in engagement with the curved edge 50 of the arms 15 of the lmy-plate 16, and when said plate 1G is turned against it in the direction of the arrow to withdraw the main catch said nose ope ates to turn the lever L15 on its 85 pivot, withdrawing the nose on the other end thereof from between the supplemental and main catches, and a plate 5b, mounted in a projectingyportion 56 of the casing, passes through a hole 58 in the wall 28 of the casing, 90 and a spring 5S, also located in said prejec tion and to which said plate is attached, presses said plate down, thereby pressing the supplemental catch down inte the recess l1 out of engagement with the recess in the keeper, so as to allow the nose 44 thereon to pass through the hole 9.

For the purpose of allowing the main latch to be withdrawn from the inside an arm 60 is provided, one end of which is secured to the inner end of the oscillatory lever, said arm projecting backwardly from said lever and then toward the front of the casing and engaging a notch 61 in the inner end of the shaft 24, said shaft within the notch having angularly-disposed faces adapted to bear against the arms 60 when the shaft 24 is turned on its pivot by the knob Q5 and withdraw the nose from between the supplemental and main catches, allowing' the plate 55 to press the supplemental catch down into the recess out of engagement with the recess in the keeper, so that the nose thereon will pass through the hole 9 in the casing, when the main catch can be slid back by means of the knob 25. i

The operation is as follows: As the main catch springs into its keeper the spring-pressed plate 55 releases the supplementary latch, and the nose on the outer end of the oscillatory lever is forced between said latches by its spring, thereby forcing the supplementary latch away from the main latch, and the nose thereon prevents the main latch from being drawn or forced back unless released by the oscillatory lever and forced down by the spring-plate 55 and spring 58u. If it be desired to withdraw the main latch from the outside, the key is inserted and the key-plate turned and by its engagement with the nose on the inner end of the oscillatory lever turns said lever on its pivot and withdraws the nose on the other end thereof from between the is turned, which turns the shaft 24, and by its connection with the oscillatory lever said lever is turned on its pivot, withdrawing the nose on the inner end thereof from between the latches, when the spring-pressed plate 55 will force the supplementary latch down into its recess, so that the nose thereon will be on a level with the surface of the main latch, when said latch canbe drawn in by pushing on the knob.

' I do not desire to be understood as limiting myself to the details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modifications maybe made in the features of construction and arrangement in the adaptation of the device to various conditions of use without departing from the spirit and scope of my in- Vention and improvements. I therefore reserve the right to all such variation and modilisation as properly fall within the scope of my invention and the terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patentl. In a lock, the combination with the latchV thereof, of asupplemental latch mounted thereon for locking said first-mentioned latch in its outer position, comprising a flexibleV plate the inner end secured rigidly to the first-mentioned latch and the outer end free and adapted to be raised or depressed and means for operating said supplementary latch, substantially as described.

2. In a lock, the combination with the latch thereof having a recess, of a supplemental latch located in said recess, for locking said firstmentioned latch in its outer position comprising a flexible plate the inner end secured rig'- idly to the first-mentioned latch and the outer i end free and adapted to be raised or depressed I and means for operating said supplemental latch, substantially as described.

3. In a lock, the combination with the latch Athereof having a recess, of a supplemental latch located in said recess for locking said first-mentioned latch in its outer position comprising a flexible plate the inner end secured rigidly to the first-mentioned latch and the outer end free and adapted to be raised or depressed and means for operating said supplemental latch from either side, substantially as described.

4. In a lock, the combination with thelatch thereof, of a supplemental latch mounted thereon for locking said first-mentioned latch in its outer position the inner end secured rigidly to the first-mentioned latch and the outer end free and adapted to be raised or depressed a single lever for engaging and raising said supplemental catch means for depressing it and means for operating said lever from both sides of the lock, substantially as described.

5. In a lock, the combination with the latch thereof, of a supplemental latch mountedthereon for locking said first-mentioned latch in its outer position the inner end secured rigidly to the first-mentioned latch and the outer end free and adapted to be raised or depressed, a single lever for engaging and raising said supplemental latch, and means for operating said lever from both sides of the lock to unlock said first-mentioned latch, substantially as described.

6. In a lock, the combination with the latch thereof, of a supplemental latch mounted thereon for locking said first-mentioned latch in its outer position the inner end secured rigidly to the first-mentioned latch and the outer end free and adapted to be raised or depressed, a single lever arranged to be inserted between said latches to engage and raise said supple- IOO IIO

mental latch, a key-plate for operating said lever and means for depressing said supplemental latch, substantially as described.

7. In a lock, the combination with the latch thereof, of a segmental latch mounted thereon for locking said Hist-mentioned latch in its thereon for locking said first-mentioned latch in its outer position the inner end secured rigidly to the inst-mentioned latch and the outer end free and adapted to be raised or depressed, a single lever for engaging and raising said supplemental latch, a key-plate for operating said lever, a shaft projecting into said latch from the opposite side to that in which the keyhole is located and arranged to operate said lever and means for operating said supplementary latch to unlock said first-mentioned latch, substantially as described.

In testimony whereof l have signed my name in the presence of the subscribing witnesses.

HERMAN LANDSBERG. l/Vitn'esses:

J C. PYBAs, J. M. l-loo'ro'e.

It is hereby oertied that lin Letters Patent No. 707,067, granted August 9, 190419 upon the application of Herman Landsberg, of New York, N. Y., for an improvement in Looks, an. error appears in the printed specification requiring correction,

follows: In line 5, page 3, the Word segmental should read supplemental; and that the seid Letters Patent should be reed with this Correction therein til-Lt the sanne may l conform to the record of the ease in the Patent Office.

Signed and; sealed this 30th dey of August, A. D., 1904iu [SEAL] E. B. MOORE,

Act/ng Commissioner of Patents.. 

